fix: explicitly disable MCP servers in btca agent config

[harshav167]

Summary

btca's internal OpenCode agent was inheriting MCP servers from the user's global ~/.config/opencode/opencode.jsonc, causing it to use external tools (perplexity, serena, etc.) instead of only searching the local cloned repo.

Problem

When running btca ask -r <resource> -q "...", the agent would call MCP tools like:

• perplexity_search
• perplexity_reason
• serena_get_current_config

This happened despite tools: { mcp: false } being set in the agent config, because MCP servers were still loaded from the global config.

Solution

Added mcp: {} at the top level of the OpenCode config to explicitly prevent any MCP servers from loading. Now btca only uses the intended tools: grep, glob, list, and read.

Testing

After this fix, btca ask only searches the local cloned repo without calling external MCP tools.

Greptile Overview

Greptile Summary

This PR re-applies a fix that was lost during a refactoring. When the CLI services were reorganized (commit 5c1ea54), the mcp: {} configuration that prevented external MCP servers from loading was removed. This caused btca ask to inherit MCP servers from the user's global ~/.config/opencode/opencode.jsonc, calling external tools like perplexity_search and serena_get_current_config instead of only using local file tools.

Changes:

• Added mcp: {} to the OpenCode config in apps/server/src/agent/service.ts:125 to explicitly disable all MCP servers
• Added execute permission to apps/cli/bin.js

The fix ensures btca's internal agent only uses the intended local tools (grep, glob, list, read) and doesn't make external API calls when searching collections.

Confidence Score: 5/5

• This PR is safe to merge with no risk
• The change is minimal and well-scoped. It adds a single configuration line (mcp: {}) that explicitly disables MCP servers, which is the intended behavior. The fix re-applies a previous solution that was accidentally removed during refactoring. The change doesn't affect existing functionality - it only prevents unwanted external tool calls.
• No files require special attention

Important Files Changed

Filename	Overview
apps/cli/bin.js	Added execute permission to bin.js file (file mode change only)
apps/server/src/agent/service.ts	Added mcp: {} to OpenCode config to prevent loading external MCP servers

[bmdavis419]

Ah nice, this is being fixed with the agent rewrite, but still a good stopgap, ty